Siemens 125-3208 operating instructions Switch, Description, Position

SED2 VFD Electronic Bypass Option Operating Instructions

After the basic sanity test, if the DIP switches have not changed and there is no operator intervention, the most recent bypass function is restored. If the DIP switches have changed, the Electronic Bypass Option activates the Stop/Reset function.

2.Press the Enable key on the Electronic Bypass Option keypad to place the unit in VFD mode.

3.Perform SED2 commissioning per the SED2 VFD Startup, Operation, and Maintenance Manual (125-3201). If using the Quick Commissioning mode, end this mode with P3900 = 3 to run a motor calculation without resetting the SED2 to factory defaults.

4.After basic SED2 operation is established and verified, turn SED2 power off via the Electronic Bypass Option input power device and verify that no dangerous voltages are present in the enclosure.

5.Select Electronic Bypass Option application features using the DIP switches.

DIP Switch Settings for E-Bypass Features.

Switch	Description
Position

1Essential Services selector switch.

2Automatic Bypass selector switch; requires SED2 programming.

3Interlock selector switch; requires SED2 programming.

4Factory test #1 selector switch. Not used; leave this switch OFF.

5Factory test #2 selector switch. Not used; leave this switch OFF.

NOTE: When the switch is ON, the feature is enabled; when the switch is OFF, the feature is disabled. For details on the Electronic Bypass Option features, see the Application Feature Setup section in this manual.

6.Re-apply power to the Electronic Bypass Option. On units with three contactors, energize the SED2 by pressing the Input pushbutton on the Electronic Bypass Option keypad.

7.Program the SED2 per the Application Feature Setup section in this manual.

8.Test all SED2 and bypass features.

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